Daily Archives: April 20, 2015

Spiral Galaxy IC 2574 (Coddington’s Nebula)


IC 2574, discovered by Edwin Coddington in 1898 and classified first as a nebula, is actually a dwarf irregular galaxy in the constellation Ursa Major and is part of the M81 group of galaxies.
An extract taken from a study by S. Steward & F. Walter 2000: In the standard picture (e.g., Weaver et al. 1977; McKee & Ostriker 1977; Chu et al.1995), these structures are believed to be created by young star-forming regions that supposedly eject a great amount of mechanical energy into the ambient ISM in terms of strong stellar winds and subsequent supernova (SN) explosions.

Imaging telescopes or lenses: Planewave Instruments CDK 12.5″
Imaging cameras: FLI Proline 6303E
Mounts: Losmandy Titan 50
Guiding telescopes or lenses: Planewave Instruments CDK 12.5″
Software: PixInsight,  Maxim DL,  Software Bisque TheSky6,  Larry Weber FocusMax
Filters: Baader Planetarium LRGB Filter Set
Accessories: Starlight Xpress AO-LF
Resolution: 2150×1434
Dates: Feb. 24, 2012
Frames: 26×900″
Integration: 6.5 hours
Avg. Moon age: 1.95 days
Avg. Moon phase: 4.26%
RA center: 157.188 degrees
DEC center: 68.426 degrees
Pixel scale: 1.043 arcsec/pixel
Orientation: -53.081 degrees
Field radius: 0.374 degrees
Locations: Observatori d’Agulló, Àger , Lleida (Catalonia), Spain
Author: Pere Gil

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